l1=['鲤鱼','草鱼','鲫鱼','鳙鱼','鲈鱼']
if '草鱼'in l1:
    print('find')
else:
    print('no find')
a=0;
for x in l1:
    print(a,x)
    a+=1
flag=0;
di={'f1':['鲤鱼','杂食性'],'f2':['草鱼','食草性'],'f3':['鲫鱼','温水性'],'f4':['鳙鱼','温水性'],'f5':['黑鱼','肉食性']}
for one in di.keys():
    if( one.find('黑鱼')):
        print('find')
        flag=1
        break;
x=0
if(flag==0):
  print('no find')
for x in di.keys():
       print(x,di[x])
  
       


